Flashbang -> fan -> roll -> fan is probably too strong, imo. Wouldn't surprise me if they nerfed it somehow.
Personally I just think that the whole "roll skips the reload animation" is pretty stupid, a single flash -> fan combo can already kill any squishy and heavily damage any tank, giving mccree a way to completely murder anything in the game before they really have a way to respond is pretty stupid.
I dunno. The way some bastions just sit up on high and pick off everyone in the area in seconds is just so lame to me, especially since it's a lower target and thus harder to hit in turret mode.
There's a reason why "Bastion PotG for pressing left click" is a recurring joke. (Same for "Reaper pressed Q".)
Anyone pressed Q really, the PotG system is completely fucking broken anyway and doesn't really mean anything (oh hey, I got a quadra kill as a Reaper by managing to sneak around the enemy team and ulting in the middle of them and that quadra was what gave us the dominance that we maintained throughout the entire match, and yet the PotG is a junkrat ulting 1 person.)
Bastion isn't that bad by himself, far from it even. So long as you're always mindful of the fact that THERE'S A BASTION ON THE OTHER TEAM and always assume that he's in turret mode ready to murder you, he becomes pretty easy to deal with. No, a single bastion isn't the problem, multiple Bastions or - god forbid - the dreaded Bastion/Reinhardt/Mercy Combo on top of a payload is absolutely fucking bonkers.
And the only hero I don't see played often is Symmetra, but that's probably because she's not actually a support and more of a defense-type, really.